function addAnswer(questionId, flag) {
	var tagName = "answerContent" + flag.toString();
	var answerContent = document.getElementById(tagName).value;

	var url = "comment/addAnswer.do";

	var params = {
		questionId : questionId,
		answerContent : answerContent
	}

	//Ajax post.
	$.post(url, params, function(data) {
		self.location = "comment/getCommentManager.do";
	});
}